SCALE FOR USE IN CONCEALED PROTECTION Russian patent published in 2014 - IPC C09C1/00 C09C3/00 B42D25/30 B42D25/378 

FIELD: printing.

SUBSTANCE: invention can be used to protect the product from counterfeiting. The method of forming a plurality of inorganic marking pigment scales comprises creation of a polymeric substrate for application of a removable coating, application of a removable coating on the polymeric substrate. After that, the embossing on the first part of the polymer substrate of the pattern of the first frame and the embossing on the second part of the pattern substrate of the second frame, different from the first pattern frame, is carried out before or after application of the removable coating on the polymeric substrate. The removable coating is removed from the polymer substrate and is processed to the mixture of scales that comprises a first plurality of scales substantially uniform in shape with the first frame pattern. To produce multiple of moulded inorganic marking pigment scales, the frame pattern of selected shape and character in the frame is applied to the polymeric substrate. Then at least one layer of an inorganic thin film is precipitated on the polymeric substrate and the layer of inorganic thin mixture is converted into a scales mixture, at that the scales mixture comprises scales having a selected shape and character.

EFFECT: invention enables to obtain concealed scales, which when added to the ink or paint are not easily detectable when random observing under visible light and which can only be detected using ultraviolet or infrared radiation.

24 cl, 10 dwg